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Colorbook
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Color Information

Black

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#51101C
RGB Values
81, 16, 28
HSL Values
349°, 67%, 19%
CMYK Values
0%, 80%, 65%, 68%

Color Variations & Tints

  • #911D32

    Lightness: 34%

  • #7B182B

    Lightness: 29%

  • #661423

    Lightness: 24%

  • #51101C

    Lightness: 19%

    Current color

  • #3C0C15

    Lightness: 14%

  • #26080D

    Lightness: 9%

  • #110306

    Lightness: 4%

Accessibility

White Text
14.6
PASS
Black Text
1.4
FAIL
WCAG AA
PASS
WCAG AAA
PASS

Accessibility Guide

Contrast Ratios
Higher values (4.5+) ensure better readability for users with visual impairments.
WCAG AA Standard
Minimum requirement: 4.5:1 contrast for normal text, 3:1 for large text.
WCAG AAA Standard
Enhanced level: 7:1 contrast for normal text, 4.5:1 for large text.

Color Harmonies

  • Complementary

    Colors opposite on the color wheel, creating high contrast

  • Triadic

    Three evenly spaced colors forming a triangle on the color wheel

  • Analogous

    Adjacent colors on the color wheel, creating harmony and unity

Be picky and fine tune your color: colors very near to #51101C

Systematic progression of extremely similar colors. Each color represents a precise step in lightness variation.

Current: #51101C

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